Top 10 Trending European Summer Destinations
#4

Porto, Portugal

45% increase in flight searches vs. previous summer
Relax and dine in the city that gave us Port wine.
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When to book
Median airfare by days before departure
Hacker Tip
As a nonstop 40-hour event, Serralves em Festa is Europe's largest contemporary arts festival. Order um cimbalinho (espresso) from a cafe and dig deep to spend the next day of your life in waking mode.
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